Re: [Zope] client argument to python function calls?

27 Nov 2000

      Figured this out, with the zope-dev archives.

In case anyone else bumps into the same thing, the FunctionTemplate class at http://www.zope.org/Members/htrd/howto/FunctionTemplate is very helpful.
-Randy
  ----- Original Message ----- 
  From: Randall Kern 
  To: zope@zope.org 
  Sent: Sunday, November 26, 2000 8:17 PM
  Subject: [Zope] client argument to python function calls?

  I'm trying to emulate some DTML methods with python code in my (python) product.

  Let's say I have two Python classes, one named Foo, the other Bar.  Something like this:

  class Foo(Folder.Folder, Persistent, Implicit):
      meta_type = "Foo"

      def magic(self, client=None):
          "magic method!"

          if client == None:
              client = self

          return client.magic_word

  class Bar(Folder.Folder, Persistent, Implicit):
      meta_type = "Bar"

      def __init__(self, id):
          self.id = id
          self.magic_word = 'Alacazam!"

  Now I create a structure like this in Zope:

  /
      foo    (instance of the Foo class)
      bar    (instance of the Bar class)

  Now if I goto /bar/foo/magic, I see the magic word.  However, I would also like to use /foo/bar/magic, and also receive the magic word.  This latter case doesn't work, the magic_word isn't set.

  In fact, the "client" argument is never anything but None.

  This is a facet of Zope I still don't quite understand...

  Thanks,
  -Randy